Search found 2 matches

by shorty
Tue Feb 12, 2008 1:13 pm
Forum: In-depth High-tech BIOS section
Topic: What do you know about BIOS NVRAM hacking?
Replies: 82
Views: 104757

Still trying to work out how these tokens relate to actual bits in nvram. and the other thing is 0x0676 (1656) bytes of NVRAM reported. --snip-- If it does we don't need to hunt for the algorithm, we just need to find where the checksum is stored! It apparently being a 16-bit value gives me hope on ...
by shorty
Thu Feb 07, 2008 8:25 am
Forum: In-depth High-tech BIOS section
Topic: What do you know about BIOS NVRAM hacking?
Replies: 82
Views: 104757

Anyone ever work out why writing to /dev/nvram doesn't update the checksum, or the bios thinks its a bad checksum?

Also, intuitivenipple, can you explain a little bit about how you traced the call to work out which bit was set in cmos?